![subject](/tpl/images/cats/himiya.png)
Chemistry, 25.07.2019 14:00 pierrezonra
If calcium has two valence electrons and sulfur has six, how many calcium atoms are needed to form an ionic bond with sulfur?
![ansver](/tpl/images/cats/User.png)
Answers: 2
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Chemistry
![question](/tpl/images/cats/himiya.png)
Chemistry, 21.06.2019 13:10
Which of these is the result of scientific research and not engineering? a. a new shoe design that features air cushioning for more comfort and protection b. the creation of glass with uv protection. c. a conclusion about diet commonalities among diabetics. d. the development of a smaller, more compact missile.
Answers: 1
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 21.06.2019 18:00
Balance this equation: n2 + h2 > nh3, write the following molar ratios: n2 / n2 / nh3 h2 /
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 21.06.2019 18:10
Which statements describe polyatomic ions? check all that apply. polyatomic ions have many charges. polyatomic ions have one overall charge. polyatomic ions repel other ions to form ionic bonds. polyatomic ions attract other ions to form ionic bonds. polyatomic ions are made up of only one type of atom. polyatomic ions are made up of two or more types of atoms.
Answers: 2
You know the right answer?
If calcium has two valence electrons and sulfur has six, how many calcium atoms are needed to form a...
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 22.04.2020 20:25
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 22.04.2020 20:25
![question](/tpl/images/cats/istoriya.png)
History, 22.04.2020 20:25
![question](/tpl/images/cats/geografiya.png)
Geography, 22.04.2020 20:25
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/User.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 22.04.2020 20:26
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.04.2020 20:26
![question](/tpl/images/cats/User.png)
![question](/tpl/images/cats/istoriya.png)
History, 22.04.2020 20:26
![question](/tpl/images/cats/en.png)
English, 22.04.2020 20:26
![question](/tpl/images/cats/mat.png)